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$288+ Cheap flights from Heathrow (LHR) to Philadelphia (PHL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PHL
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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Find cheap flights from Heathrow to Philadelphia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from London Heathrow to Philadelphia are usually found in February or March, booked 25 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from Heathrow to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$604
(TravelUp)

One-way from

$288
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$777

Good round-trip deal

$739 or less

Good one-way deal

$611 or less
Provider with most accurate pricing for London Heathrow-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-Philadelphia flights.
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From London Heathrow to Philadelphia
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One-way flight from London Heathrow to Philadelphia
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($68 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from London Heathrow to Philadelphia.
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Price to beat on a one-way flight from London Heathrow to Philadelphia.
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Find flight deals from Heathrow to Philadelphia

Cheapest flights from Heathrow to Philadelphia
Explore the most affordable flight options available from Heathrow to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.

This British Airways deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/2610:15 am
LHR
-
PHL
Nonstop8h 15m
British Airways
Mon 2/27:50 pm
PHL
-
LHR
Nonstop7h 00m
British Airways
Deal found 1/14$610
This Delta deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/2611:45 am
LHR
-
PHL
2 stops16h 28m
Delta
Wed 2/259:41 am
PHL
-
LHR
1 stop18h 04m
Delta
Deal found 1/15$611
This Delta deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/2611:45 am
LHR
-
PHL
2 stops16h 28m
Delta
Thu 2/2612:16 pm
PHL
-
LHR
2 stops17h 34m
Delta
Deal found 1/15$612
This British Airways deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:50 am
LHR
-
PHL
1 stop11h 15m
British Airways
Mon 2/96:35 pm
PHL
-
LHR
Nonstop7h 00m
British Airways
Deal found 1/12$613
This United Airlines deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/137:25 am
LHR
-
PHL
1 stop14h 49m
United Airlines
Sat 2/218:02 pm
PHL
-
LHR
1 stop9h 48m
United Airlines
Deal found 1/15$614
This British Airways deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:40 am
LHR
-
PHL
1 stop12h 15m
British Airways
Wed 7/83:20 pm
PHL
-
LHR
1 stop13h 15m
British Airways
Deal found 1/14$615
This British Airways deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/11:25 pm
LHR
-
PHL
1 stop10h 30m
British Airways
Tue 5/55:55 pm
PHL
-
LHR
1 stop9h 05m
British Airways
Deal found 1/12$616
This Cheapflightsfares deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/241:25 pm
LHR
-
PHL
1 stop10h 30m
British Airways
Tue 4/286:45 pm
PHL
-
LHR
Nonstop7h 05m
British Airways
Deal found 1/13$617
This Virgin Atlantic deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/268:55 am
LHR
-
PHL
2 stops17h 21m
Virgin Atlantic
Mon 2/212:29 pm
PHL
-
LHR
2 stops15h 51m
Virgin Atlantic
Deal found 1/13$618
This American Airlines deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/127:50 am
LHR
-
PHL
1 stop11h 05m
American Airlines
Thu 2/197:40 pm
PHL
-
LHR
Nonstop7h 10m
American Airlines
Deal found 1/12$619
This Air Canada deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/136:50 am
LHR
-
PHL
2 stops12h 57m
Multiple Airlines
Sun 2/223:30 pm
PHL
-
LHR
1 stop10h 40m
Multiple Airlines
Deal found 1/14$620
This oojo deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/147:50 am
LHR
-
PHL
1 stop11h 05m
British Airways
Tue 2/247:40 pm
PHL
-
LHR
Nonstop7h 10m
British Airways
Deal found 1/13$621

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Philadelphia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 15, 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Philadelphia that are best for you.

Fly from

Heathrow

Fly to

Philadelphia

Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 1/26

10:00 am-11:13 pm

2 stops18h 13m

Philadelphia

Mon 2/23

12:29 pm-10:15 am

2 stops16h 46m

$611

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 1/27

6:30 am-4:50 pm

2 stops15h 20m

Philadelphia

Sun 2/22

8:06 pm-8:45 am

1 stop31h 39m

$611

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 1/28

6:30 am-4:50 pm

2 stops15h 20m

Philadelphia

Mon 2/23

11:09 am-7:50 am

1 stop15h 41m

$611

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 1/27

6:30 am-4:50 pm

2 stops15h 20m

Philadelphia

Thu 2/26

6:00 am-7:50 am

1 stop20h 50m

$611

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 1/26

11:45 am-11:13 pm

2 stops16h 28m

Philadelphia

Wed 2/25

9:41 am-8:45 am

1 stop18h 04m

$611

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 1/29

7:50 am-2:05 pm

1 stop11h 15m

Philadelphia

Thu 2/26

6:35 pm-6:35 am

Nonstop7h 00m

$612

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 3/14

11:10 am-10:46 pm

1 stop15h 36m

Philadelphia

Fri 3/20

7:45 pm-7:10 am

2 stops31h 25m

$612

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 2/5

7:50 am-2:05 pm

1 stop11h 15m

Philadelphia

Mon 2/9

7:50 pm-7:50 am

Nonstop7h 00m

$612

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 1/26

6:30 am-4:50 pm

2 stops15h 20m

Philadelphia

Mon 2/2

12:29 pm-8:05 am

2 stops14h 36m

$612

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 1/26

11:45 am-11:13 pm

2 stops16h 28m

Philadelphia

Thu 2/26

12:16 pm-10:50 am

2 stops17h 34m

$612

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 20 results
1
2

Compare providers for flights from Heathrow to Philadelphia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Philadelphia in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Thrive TravelPrice Accuracy3 starsTrust Score*1 star
GurufarePrice Accuracy2 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London Heathrow Airport-Philadelphia flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London Heathrow Airport-Philadelphia flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Philadelphia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Philadelphia flights, Cheapflights users trust Gurufare the most. Gurufare has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Philadelphia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Heathrow to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Heathrow with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Philadelphia

How far ahead should I book a flight from London Heathrow Airport to Philadelphia?

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Philadelphia. Price data was last updated on January 9, 2026.

The best time to book flights from London Heathrow Airport to Philadelphia is 25 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from London Heathrow Airport to Philadelphia?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Philadelphia (average of $414). Flying from London Heathrow Airport to Philadelphia in June is currently the most expensive (average of $457). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to PHL?

Find hourly flight availability from Heathrow to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 15, 2026.

When flying from London Heathrow Airport to Philadelphia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from London Heathrow Airport to Philadelphia?

The best insider tips for London Heathrow Airport to Philadelphia flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your London Heathrow Airport to Philadelphia trip
Airports
LHR

For a smooth departure, ensure all liquids are in one small bag to avoid lengthy security checks at Heathrow.

Read more about LHRBy Ramsey Qubein
PHL

For a quick trip to Center City, use the SEPTA Airport Line. It's efficient and operates from 5:00 a.m. to midnight.

Read more about PHLBy Mark Chesnut
Our travel experts
Mark Chesnut

Mark Chesnut

Expert on PHL

Mark Chesnut

Mark Chesnut

Mark Chesnut is a travel writer and public speaker with more than 30 years of experience. The 2019 winner of the NLGJA Excellence in Travel Writing Award, Mark is the author of the book “Prepare for Departure” and has covered air travel for multiple top consumer and trade media outlets.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Philadelphia. Reviews last updated January 15, 2026.
Peruse reviews from past customers who have flown with American Airlines, Aer Lingus, and Iberia from London Heathrow Airport to Philadelphia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,135 reviews

Boarding

7.5

Food

6.4

Comfort

7.2

Overall

7.2

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Cameron,Nov 2025

LHR - LIS

This trip was probably the worst one we have ever had on British Airways!!!
American Airlines
7.2
Good
11,135 reviews
American Airlines
7.2
Good
11,135 reviews

Boarding

7.5

Food

6.4

Comfort

7.2

Overall

7.2

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Cameron,Nov 2025

LHR - LIS

This trip was probably the worst one we have ever had on British Airways!!!
Aer Lingus
7.2
Good
1,435 reviews
American Airlines
7.2
Good
11,135 reviews

Boarding

7.5

Food

6.4

Comfort

7.2

Overall

7.2

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Cameron,Nov 2025

LHR - LIS

This trip was probably the worst one we have ever had on British Airways!!!
Iberia
7.0
Good
3,087 reviews
American Airlines
7.2
Good
11,135 reviews

Boarding

7.5

Food

6.4

Comfort

7.2

Overall

7.2

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Cameron,Nov 2025

LHR - LIS

This trip was probably the worst one we have ever had on British Airways!!!
British Airways
6.7
Okay
7,680 reviews
American Airlines
7.2
Good
11,135 reviews

Boarding

7.5

Food

6.4

Comfort

7.2

Overall

7.2

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Cameron,Nov 2025

LHR - LIS

This trip was probably the worst one we have ever had on British Airways!!!

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Philadelphia from London Heathrow?

    Most people fly into Philadelphia (PHL) if they book a flight to Philadelphia from London Heathrow. On average, Philadelphia has 10 inbound flights from London Heathrow per day from 4 airlines. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.

  • How long is the flight from London Heathrow Airport to Philadelphia?

    Departing from London Heathrow Airport to Philadelphia will take you 18h 13m. The distance between London Heathrow Airport and Philadelphia is about 3533 mi.

  • What are the cheapest airlines flying from London Heathrow Airport to Philadelphia round-trip?

    Flying on Iberia is currently your cheapest option to Philadelphia, with prices starting at $429. Additional round-trip tickets that might be worth considering are offered by American Airlines and British Airways, with the lowest prices starting at $592 and $610, respectively. Iberia is currently priced 43% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from London Heathrow Airport to Philadelphia one-way?

    To fly one-way, consider booking your trip with Finnair, which is currently one of the cheapest options available, starting at $466. Aer Lingus flights start at $494 while deals on American Airlines start at $503 one-way.

  • What are the most reliable airlines from London Heathrow Airport to Philadelphia?

    Before booking your flight to Philadelphia from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: Aer Lingus (80%), American Airlines (79%), Finnair( 79%).

  • What are the cheapest flights from London Heathrow Airport to Philadelphia?

    Looking for the cheapest flight from London Heathrow Airport to Philadelphia? While on average our users pay $1,476, our data indicates the cheapest price to be $482. The most popular route (London Heathrow - Philadelphia), is priced around $451.

  • Can I find deals for flights from Heathrow to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Heathrow to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Philadelphia.

  • Can I find deals for business class flights from Heathrow to Philadelphia?

    Yes. Cheapflights offers flight deals from Heathrow to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Philadelphia?

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Philadelphia (average of $414). Flying from London Heathrow Airport to Philadelphia in June is currently the most expensive (average of $457). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
Pottstown
Reading
Ocean City
King of Prussia
Cherry Hill
Lewes
Dewey Beach
Ephrata
Camden
Vineland
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Millville
Newark
Chester

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Heathrow to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Heathrow to LaGuardia flights
Gatwick to Newark flights
London City to John F Kennedy Intl flights
Gatwick to John F Kennedy Intl flights
Gatwick to LaGuardia flights
Stansted to John F Kennedy Intl flights
Luton to John F Kennedy Intl flights
London City to Newark flights
Luton to Newark flights
Stansted to Newark flights
Heathrow to Dulles Intl flights
Heathrow to Reagan-National flights
Gatwick to Dulles Intl flights
London City to Dulles Intl flights
Stansted to Dulles Intl flights
Gatwick to Reagan-National flights
Luton to Dulles Intl flights
London City to Philadelphia flights
Gatwick to Philadelphia flights
Heathrow to Pittsburgh flights
Luton to LaGuardia flights
Stansted to Philadelphia flights
Luton to Philadelphia flights
Southend to Newark flights
Southend to John F Kennedy Intl flights
Gatwick to Pittsburgh flights
London City to Reagan-National flights
Stansted to Pittsburgh flights
Heathrow to Allentown flights
Luton to Pittsburgh flights
Heathrow to Harrisburg flights

Top 4 airlines flying from Heathrow to Philadelphia

Discover the top 4 airlines that operate flights from Heathrow to Philadelphia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$429Average$741FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$592Average$814FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$610Average$793FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$670Average$1,182FlexibilityNo cancel feeOn-timeN/A

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